Star Wars hyperdrive speeds have always been "speed of plot", but they do seem to operate more in hours than days. Look at Attack of the Clones (go on, it'll only hurt a little bit) - Obi Wan is captured whilst spying on the Separatists on Geonosis, who are bringing their plans to fruition. Anakin and Padme set off from Tatooine to rescue him, after forwarding his SOS to the Jedi temple on Coruscant. Clearly they're not expecting to be days late to the party, so for them at least it must be a short trip.
This also supports what I said in post #11 about hyperspace lanes.
Post 11
You're thinking too linearly. Hyperspace is another dimension where spacial distances are distorted. That's why hyperspace routes are so important. They're the name of the game. You could have planet Core Worlds with two like vessels heading to the Rim. One ship takes a hyperspace route that is fairly straight (meaning clean of obstacles). The other ship takes a route that avoids a lot of astronomical obstacles. The first ship might reach its destination in a few hours where the other vessel's trip will take days.
Likewise, a ship taking off from a planet in the Rim, heading to the core worlds, could take a major trade route and be there in hours. The same ship, taking off from the same world, could use an old, outdated smuggler's route to a world in the same sector--very close, astronomically speaking, and also in the Rim--and get there in days.
I've read stories (which, I'm sure, are not canon now--but it doesn't mean the concept won't be canon in the future) that talk of scouts striking it rich after discovering and mapping out a faster hyperspace lane.
It's like old highways that used to go through small towns way back in the day, and then someone comes along and builds the interstate that by passes all those small towns. The interstate gets you to another city faster than by driving the highway system, even if the interstate takes a more round about approach.
Now that I see your evidence on top of what I wrote, my position that the base unit of hyperspace time is hours rather than days is becoming more entrenched.